TY  - BOOK
TI  - Home-grown pitprops
U1  - 634.982 21st ed.
PY  - 1931///
CY  - London
PB  - Forest Products Research laboratory
KW  - Seasoning of Pitprops
KW  - Physical properties
KW  - Coal mines
KW  - Timber pitprops
KW  - Drying of pitprops
N1  - Forest Products Research
Bulletin No. 9
ER  -